package io;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

public class FOSDemo {
    public static void main(String[] args) throws IOException {
        //向当前项目目录下的fos.dat文件里写入数据
        FileOutputStream fos = new FileOutputStream("./fos.dat");
        fos.write(1);
        fos.write(2);
        System.out.println("输出完毕");  //流用完了应当关闭
        fos.close();
    }
}
